Caine meets Logan McBurney, a Scotsman who has hijacked a gold-transporting stagecoach named Old Ironsides, to haul an enormous box that he claims is his dead Sioux wife's coffin. Along the way to the burial ground, which is on Sioux land, Caine remembers times in the monastery, unaware that several robbers are following closely, hoping to take Old Ironsides for themselves.

Caine and Logan arrive at the Sioux burial ground, to bury what Caine believes is Logan's wife in a huge crate, and are confronted by angry Sioux warriors who feel they are trespassing. They must also deal with two robbers as well as the US Calvary. Caine recalls his own love story, that like Logan's wife, ended tragically.